opcodes/mmix-opc.c

/* mmix-opc.c -- MMIX opcode table
   Copyright (C) 2001-2025 Free Software Foundation, Inc.
   Written by Hans-Peter Nilsson (hp@bitrange.com)

   This file is part of the GNU opcodes library.

   This library is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3, or (at your option)
   any later version.

   It is distributed in the hope that it will be useful, but WITHOUT
   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
   License for more details.

   You should have received a copy of the GNU General Public License
   along with this file; see the file COPYING.  If not, write to the
   Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
   MA 02110-1301, USA.  */

#include <stdio.h>
#include "opcode/mmix.h"
#include "symcat.h"

/* Register-name-table for special registers.  */
const struct mmix_spec_reg mmix_spec_regs[] =
 {
   /* Keep rJ at top; it's the most frequently used one.  */
   {"rJ", 4},
   {"rA", 21},
   {"rB", 0},
   {"rC", 8},
   {"rD", 1},
   {"rE", 2},
   {"rF", 22},
   {"rG", 19},
   {"rH", 3},
   {"rI", 12},
   {"rK", 15},
   {"rL", 20},
   {"rM", 5},
   {"rN", 9},
   {"rO", 10},
   {"rP", 23},
   {"rQ", 16},
   {"rR", 6},
   {"rS", 11},
   {"rT", 13},
   {"rU", 17},
   {"rV", 18},
   {"rW", 24},
   {"rX", 25},
   {"rY", 26},
   {"rZ", 27},
   {"rBB", 7},
   {"rTT", 14},
   {"rWW", 28},
   {"rXX", 29},
   {"rYY", 30},
   {"rZZ", 31},
   {NULL, 0}
 };

/* Opcode-table.  In order to cut down on redundant contents, we use helper
   macros.  */

/* All bits in the opcode-byte are significant.  Add "| ..." expressions
   to add zero-bits.  */
#undef O
#define O(m) ((unsigned long) (m) << 24UL), ((~(unsigned long) (m) & 255) << 24)

/* Bits 7..1 of the opcode are significant.  */
#undef Z
#define Z(m) ((unsigned long) (m) << 24), ((~(unsigned long) (m) & 254) << 24)

/* For easier overview of the table.  */
#define N mmix_type_normal
#define B mmix_type_branch
#define C mmix_type_condbranch
#define MB mmix_type_memaccess_byte
#define MW mmix_type_memaccess_wyde
#define MT mmix_type_memaccess_tetra
#define MO mmix_type_memaccess_octa
#define M mmix_type_memaccess_block
#define J mmix_type_jsr
#define P mmix_type_pseudo

#define OP(y) XCONCAT2 (mmix_operands_,y)

/* Groups of instructions specified here must, if all are matching the
   same instruction, be consecutive, in order more-specific to
   less-specific match.  */

const struct mmix_opcode mmix_opcodes[] =
 {
   {"trap",	O (0),		OP (xyz_opt),		J},
   {"fcmp",	O (1),		OP (regs),		N},
   {"flot",	Z (8),		OP (roundregs_z),	N},

   {"fun",	O (2),		OP (regs),		N},
   {"feql",	O (3),		OP (regs),		N},
   {"flotu",	Z (10),		OP (roundregs_z),	N},

   {"fadd",	O (4),		OP (regs),		N},
   {"fix",	O (5),		OP (roundregs),		N},
   {"sflot",	Z (12),		OP (roundregs_z),	N},

   {"fsub",	O (6),		OP (regs),		N},
   {"fixu",	O (7),		OP (roundregs),		N},
   {"sflotu",	Z (14),		OP (roundregs_z),	N},

   {"fmul",	O (16),		OP (regs),		N},
   {"fcmpe",	O (17),		OP (regs),		N},
   {"mul",	Z (24),		OP (regs_z),		N},

   {"fune",	O (18),		OP (regs),		N},
   {"feqle",	O (19),		OP (regs),		N},
   {"mulu",	Z (26),		OP (regs_z),		N},

   {"fdiv",	O (20),		OP (regs),		N},
   {"fsqrt",	O (21),		OP (roundregs),		N},
   {"div",	Z (28),		OP (regs_z),		N},

   {"frem",	O (22),		OP (regs),		N},
   {"fint",	O (23),		OP (roundregs),		N},
   {"divu",	Z (30),		OP (regs_z),		N},

   {"add",	Z (0x20),	OP (regs_z),		N},
   {"2addu",	Z (0x28),	OP (regs_z),		N},

   {"addu",	Z (0x22),	OP (regs_z),		N},
   /* Synonym for ADDU.  Put after ADDU, since we don't prefer it for
      disassembly.  It's supposed to be used for addresses, so we make it
      a memory block reference for purposes of assembly.  */
   {"lda",	Z (0x22),	OP (regs_z_opt),	M},
   {"4addu",	Z (0x2a),	OP (regs_z),		N},

   {"sub",	Z (0x24),	OP (regs_z),		N},
   {"8addu",	Z (0x2c),	OP (regs_z),		N},

   {"subu",	Z (0x26),	OP (regs_z),		N},
   {"16addu",	Z (0x2e),	OP (regs_z),		N},

   {"cmp",	Z (0x30),	OP (regs_z),		N},
   {"sl",	Z (0x38),	OP (regs_z),		N},

   {"cmpu",	Z (0x32),	OP (regs_z),		N},
   {"slu",	Z (0x3a),	OP (regs_z),		N},

   {"neg",	Z (0x34),	OP (neg),		N},
   {"sr",	Z (0x3c),	OP (regs_z),		N},

   {"negu",	Z (0x36),	OP (neg),		N},
   {"sru",	Z (0x3e),	OP (regs_z),		N},

   {"bn",	Z (0x40),	OP (regaddr),		C},
   {"bnn",	Z (0x48),	OP (regaddr),		C},

   {"bz",	Z (0x42),	OP (regaddr),		C},
   {"bnz",	Z (0x4a),	OP (regaddr),		C},

   {"bp",	Z (0x44),	OP (regaddr),		C},
   {"bnp",	Z (0x4c),	OP (regaddr),		C},

   {"bod",	Z (0x46),	OP (regaddr),		C},
   {"bev",	Z (0x4e),	OP (regaddr),		C},

   {"pbn",	Z (0x50),	OP (regaddr),		C},
   {"pbnn",	Z (0x58),	OP (regaddr),		C},

   {"pbz",	Z (0x52),	OP (regaddr),		C},
   {"pbnz",	Z (0x5a),	OP (regaddr),		C},

   {"pbp",	Z (0x54),	OP (regaddr),		C},
   {"pbnp",	Z (0x5c),	OP (regaddr),		C},

   {"pbod",	Z (0x56),	OP (regaddr),		C},
   {"pbev",	Z (0x5e),	OP (regaddr),		C},

   {"csn",	Z (0x60),	OP (regs_z),		N},
   {"csnn",	Z (0x68),	OP (regs_z),		N},

   {"csz",	Z (0x62),	OP (regs_z),		N},
   {"csnz",	Z (0x6a),	OP (regs_z),		N},

   {"csp",	Z (0x64),	OP (regs_z),		N},
   {"csnp",	Z (0x6c),	OP (regs_z),		N},

   {"csod",	Z (0x66),	OP (regs_z),		N},
   {"csev",	Z (0x6e),	OP (regs_z),		N},

   {"zsn",	Z (0x70),	OP (regs_z),		N},
   {"zsnn",	Z (0x78),	OP (regs_z),		N},

   {"zsz",	Z (0x72),	OP (regs_z),		N},
   {"zsnz",	Z (0x7a),	OP (regs_z),		N},

   {"zsp",	Z (0x74),	OP (regs_z),		N},
   {"zsnp",	Z (0x7c),	OP (regs_z),		N},

   {"zsod",	Z (0x76),	OP (regs_z),		N},
   {"zsev",	Z (0x7e),	OP (regs_z),		N},

   {"ldb",	Z (0x80),	OP (regs_z_opt),	MB},
   {"ldt",	Z (0x88),	OP (regs_z_opt),	MT},

   {"ldbu",	Z (0x82),	OP (regs_z_opt),	MB},
   {"ldtu",	Z (0x8a),	OP (regs_z_opt),	MT},

   {"ldw",	Z (0x84),	OP (regs_z_opt),	MW},
   {"ldo",	Z (0x8c),	OP (regs_z_opt),	MO},

   {"ldwu",	Z (0x86),	OP (regs_z_opt),	MW},
   {"ldou",	Z (0x8e),	OP (regs_z_opt),	MO},

   {"ldsf",	Z (0x90),	OP (regs_z_opt),	MT},

   /* This doesn't seem to access memory, just the TLB.  */
   {"ldvts",	Z (0x98),	OP (regs_z_opt),	M},

   {"ldht",	Z (0x92),	OP (regs_z_opt),	MT},

   /* Neither does this per-se.  */
   {"preld",	Z (0x9a),	OP (x_regs_z),		N},

   {"cswap",	Z (0x94),	OP (regs_z_opt),	MO},
   {"prego",	Z (0x9c),	OP (x_regs_z),		N},

   {"ldunc",	Z (0x96),	OP (regs_z_opt),	MO},
   {"go",	Z (GO_INSN_BYTE),
				OP (regs_z_opt),	B},

   {"stb",	Z (0xa0),	OP (regs_z_opt),	MB},
   {"stt",	Z (0xa8),	OP (regs_z_opt),	MT},

   {"stbu",	Z (0xa2),	OP (regs_z_opt),	MB},
   {"sttu",	Z (0xaa),	OP (regs_z_opt),	MT},

   {"stw",	Z (0xa4),	OP (regs_z_opt),	MW},
   {"sto",	Z (0xac),	OP (regs_z_opt),	MO},

   {"stwu",	Z (0xa6),	OP (regs_z_opt),	MW},
   {"stou",	Z (0xae),	OP (regs_z_opt),	MO},

   {"stsf",	Z (0xb0),	OP (regs_z_opt),	MT},
   {"syncd",	Z (0xb8),	OP (x_regs_z),		M},

   {"stht",	Z (0xb2),	OP (regs_z_opt),	MT},
   {"prest",	Z (0xba),	OP (x_regs_z),		M},

   {"stco",	Z (0xb4),	OP (x_regs_z),		MO},
   {"syncid",	Z (0xbc),	OP (x_regs_z),		M},

   {"stunc",	Z (0xb6),	OP (regs_z_opt),	MO},
   {"pushgo",	Z (PUSHGO_INSN_BYTE),
				OP (pushgo),		J},

   /* Synonym for OR with a zero Z.  */
   {"set",	O (0xc1)
		  | 0xff,	OP (set),		N},

   {"or",	Z (0xc0),	OP (regs_z),		N},
   {"and",	Z (0xc8),	OP (regs_z),		N},

   {"orn",	Z (0xc2),	OP (regs_z),		N},
   {"andn",	Z (0xca),	OP (regs_z),		N},

   {"nor",	Z (0xc4),	OP (regs_z),		N},
   {"nand",	Z (0xcc),	OP (regs_z),		N},

   {"xor",	Z (0xc6),	OP (regs_z),		N},
   {"nxor",	Z (0xce),	OP (regs_z),		N},

   {"bdif",	Z (0xd0),	OP (regs_z),		N},
   {"mux",	Z (0xd8),	OP (regs_z),		N},

   {"wdif",	Z (0xd2),	OP (regs_z),		N},
   {"sadd",	Z (0xda),	OP (regs_z),		N},

   {"tdif",	Z (0xd4),	OP (regs_z),		N},
   {"mor",	Z (0xdc),	OP (regs_z),		N},

   {"odif",	Z (0xd6),	OP (regs_z),		N},
   {"mxor",	Z (0xde),	OP (regs_z),		N},

   {"seth",	O (0xe0),	OP (reg_yz),		N},
   {"setmh",	O (0xe1),	OP (reg_yz),		N},
   {"orh",	O (0xe8),	OP (reg_yz),		N},
   {"ormh",	O (0xe9),	OP (reg_yz),		N},

   {"setml",	O (0xe2),	OP (reg_yz),		N},
   {"setl",	O (SETL_INSN_BYTE),
				OP (reg_yz),		N},
   {"orml",	O (0xea),	OP (reg_yz),		N},
   {"orl",	O (0xeb),	OP (reg_yz),		N},

   {"inch",	O (INCH_INSN_BYTE),
				OP (reg_yz),		N},
   {"incmh",	O (INCMH_INSN_BYTE),
				OP (reg_yz),		N},
   {"andnh",	O (0xec),	OP (reg_yz),		N},
   {"andnmh",	O (0xed),	OP (reg_yz),		N},

   {"incml",	O (INCML_INSN_BYTE),
				OP (reg_yz),		N},
   {"incl",	O (0xe7),	OP (reg_yz),		N},
   {"andnml",	O (0xee),	OP (reg_yz),		N},
   {"andnl",	O (0xef),	OP (reg_yz),		N},

   {"jmp",	Z (0xf0),	OP (jmp),		B},
   {"pop",	O (0xf8),	OP (pop),		B},
   {"resume",	O (0xf9)
		  | 0xffff00,	OP (resume),		B},

   {"pushj",	Z (0xf2),	OP (pushj),		J},
   {"save",	O (0xfa)
		  | 0xffff,	OP (save),		M},
   {"unsave",	O (0xfb)
		  | 0xffff00,	OP (unsave),		M},

   {"geta",	Z (0xf4),	OP (regaddr),		N},
   {"sync",	O (0xfc),	OP (sync),		N},
   {"swym",	O (SWYM_INSN_BYTE),
				OP (xyz_opt),		N},

   {"put", Z (0xf6) | 0xff00,	OP (put),		N},
   {"get", O (0xfe) | 0xffe0,	OP (get),		N},
   {"trip",	O (0xff),	OP (xyz_opt),		J},

   /* We have mmixal pseudos in the ordinary instruction table so we can
      avoid the "set" vs. ".set" ambiguity that would be the effect if we
      had pseudos handled "normally" and defined NO_PSEUDO_DOT.

      Note that IS and GREG are handled fully by md_start_line_hook, so
      they're not here.  */
   {"loc",	~0, ~0,		OP (loc),		P},
   {"prefix",	~0, ~0,		OP (prefix),		P},
   {"byte",	~0, ~0,		OP (byte),		P},
   {"wyde",	~0, ~0,		OP (wyde),		P},
   {"tetra",	~0, ~0,		OP (tetra),		P},
   {"octa",	~0, ~0,		OP (octa),		P},
   {"local",	~0, ~0,		OP (local),		P},
   {"bspec",	~0, ~0,		OP (bspec),		P},
   {"espec",	~0, ~0,		OP (espec),		P},

   {NULL, ~0, ~0, OP (none), N}
 };